‘Let us not forget this: when “I raise my arm”;, my arm goes up. And the problem arises: what is left over if I subtract the fact that my arm goes up from that fact that I raise my arm?’.

Locke's contribution to the discussion was fourfold: First , he saw the importance of the problem; Second , he realized that the puzzle cases, the “strange suppositions,” were relevant; Third , he maintained “same” had a different meaning when applied to “person” from its meaning in other contexts; and, Fourth , he offered his much criticized solution of the problem.